Boiler



March 29, 1932. A, T, JOHANSON 1,851,707

BOILER Filed Jan. 9, 1 931 J9 @4W W. mm

"Ll ITLUGVT' Patented Mar. 29,2 yl 932 *PVA*rialvrv oFFicE ADOLPHT. JOHANSONVOF CHICAGO, ILLINOIS` y BOILER' Applicationiledl January 9, 1931. Serial No. L567,554.y

My invention pertains to certain novel features of construction and improvements in the manner of functioning finboilers, heaters, garbage incinerators, and the like, and one of its leading aims is to provide a structure of this character having two grat'es with associated walls or baffles, preferably water heatingwhereby the appliancemay operate'with eiiiciency and economy. v' f A yfurther salient featureV of the invention resides in the factthat the baille walls are permanently fixed in place, whereby they cannot become displaced or dislodged f during shipment or transportation, and lthey are arranged substantially vertically, in the preferred embodiment of the invention, so that they are largely,'if not entirely, self-cleaning ;r

meaning by that, that the' soot tending to find lodgment thereon naturallyfalls off because of the upright disposition of the barriers. f

To enable those acquainted with this art to-A understand the invention fully, in the accompanying drawings, constituting a part of this specification, and to which reference should be yhad in connection withy the following de-A tailed description,a desirable embodiment of the invention in physical form has been depicted, and, for simplicity, ylike reference numerals have been employed to designate the same parts throughout the several views. g In the drawings f Figure 1 is a longitudinal, central, vertical section through the boiler'on line 1-.1,of Figure 3;V f

Figure 2 is a vertical cross-sectionon line 2--2 of Figurel; and e' y n Figure 3 is a vertical ycross-section'on line 3-3 of Figure 1. f f

Arrows have been associatedwth the specified section lines to indicate the direction in which the parts are viewed in connectionwith such sections.` f Y Referring to thedrawings, it will be perceived vthat the newboiler rvor equivalentapparat-us includes a hollow base 11 divided by a transverse .partition wa-11x12 into twoyash pits or chambers 13 andf14 equipped withi doorways andiassociated doors 15 andV 16, re-

spectively. i ,K

` Supportedron such underlying base isr the boiler proper having a metal sheet bent to form-the two, outer yside-walls 17 and 18andk the curved or rounded, top, exterior wall 19, f

flanged end-walls 21 and 22 being welded `to 65 such wrapper sheet inthe usual manner.

, Inside of, and spaced inwardly away'from, such outer, metal sheet or wall, a smaller, similar metal sheet is located having side-walls 23 and 24 4andan upwardly-arched, top section k60 25, wherebyv side'water-legs l26 and 27 are provided, ,such yformed or bent sheet being f welded around itsL edges to flanges offrent and rear-wall plates'28 and 29, respectively,

the'margins of inwardly-projecting flanges .65.

31 and 32along the lower edges of the outer wallsV 21* and'22 being welded to the adjacent surfaces of the inner end-wall plates28 and 29 tol close the bottoms of the front andrrear water-legs 33 and 34, analogous anges 35 70` and 36 at the lower borders of the o uter walls and 18-being likewise welded to the companion, inner walls 23 and 24, all as is clearly illustrated.

Horizontal, transverse'water-tubesfin four 7b groups,f37, 38,v 39, 40, extend through aligned lapertures in the inner walls 23 and/24 and thus'connect or join the water-legs y26 and 27 together. f' p f f. About midwayfof the lengthof the structure an upright, hollow, thin' or 'Y shallow, water-wallk 41 connects the two side waterlegs 26 and 27 together, such wall being made of sheet-metal which fits in correspondinglyshaped,rectangular openings in the'plates23 85 and 24 to whichits margins are welded, such', water-heating cross-wall extending about three-fourths of the way from the bottom of -thefcompartm'entin the boiler to its top. 90 Such crossor transverse water-wall divides the Aboiler, into two, fuel-combustion boxes `or chambers 42 and 43,1theonehavinga fire-'box doorway and door 44, and a cleanout doorway i anddoor or closure 45 at one end of them;y

the other end-wall. f

Chamber 42has a grate 49 and the compan- ,100 v ion or correlated chamber 43 is itted with a similar grate 51. y

As is clearly presented, the upper portion of the double back-wall 22, 29 has a flue or connection 52 to convey the products of combustion to the chimney or stack, not shown, and such conduit is equipped with thecustomary damper 53.

The opposite end-wall of the structure has a similar or likelue or conduit 152 for the escape of the hot combustion gases to the stack or chimney and such passage is Vfitted with a damper 153.

About midway between the intermediate wall 41 and the rear wall 22, 29, the structure is provided with a hollow, water-filled barrieror baille 54 open at its top and ends to the water space of the boiler above the curved sheet 25 and to the side water-legs 26, 27, the margins of the sheet-metal walls of such part 54 being welded around the border of the a-ppropriately-shaped openings provided in the inner bent plate 23, 24,25, the bottom of such barrier or -delector being `closed in `any approved manner, 'as by a flange 55 on one of the barrier side-plates, whose margin is welded to ythe opposite side-plate.

Barrier 54, above the water-tubes 39 and 40, has a horizontal opening or passage 56 therethrough fit-ted Vwith a rocking damper 57, the opening yand closingor adjustment of which may be effected by any convenient means, not shown.

A similar, water-charged, vertical, depending battle 154 with :a port 156 and damper 157 thereforV is located between the groups of Y tubes 37 and 38, but, in the present instance, it

does not extend down quite .so far as the companion barrier 54.

It will be noted that the cross-wall 41 extends upwardly from the grates to the tops of the uppermost `row of transverse `water tubesor pipes, that the barrier 54 continues down to the bottoms of the lowermost series .l of such pipes or` tubes, andth-at the baille 154 is somewhat shorter.

Dampers 53 and 157 are connected together by Va link 257 so that they work together, and dampers 153 and 57 are similarly united by a link 50,V compelling them to operate in unison. Y

When vdamper 53 is opendamper 157 is likewise open, and, conversely, when either of such dampers is closed, `the other necessarily is closed; and, comparably, when damper 153'is open, damper 57` is also open, and when one of such dampers is closed, both are necessarily closed.

Such pairsof dempers may be rocked to open or to close them by any approved means.

Either grate may be used singly for the burning of fuel or for the incineration Aoi" garbage or refuse, or both grates maybe employed conjointly for such fuel combustion, or refuse disposal.

lhen the front grate 49 is made use of for the burning of fuel, with the rear grate 51 either idle or employed for the disposal of garbage or the like, the damper 57 is usually closed and the damper 157 open, thereby allowing the combustion gasesto flow up between the water-tubes 37 and 3S, a portion of such gases passing through the open port 156, and all of the -gases flowing over the top of wall 41, down between the tubes 39, around the lower end of barrier 54, up between .the pipes 40, and out to the stack through the open exit or discharge iiue 52, .it being understood that under these conditions ue 152 is closed.

, Obviously, under such circumstances, the hot gases comes into contact with all of the tubes, all of the walls of the boiler, including I the cross or division wall 41, and the barriers 54 and 154, which results in an eicient and economical operation of the appliance.

It the rear grate 51 is used alone for the bu-rning'ot' fuel, with the front grate 49 either idle or used for the incineration vof garbage., it is customary to open the damper 57 and close damper 157, and to open flue 152 and close Hue 52, so that the combustion gases will pass up between the tubes 39 and 40, tls-ose flowing between the tubes 40 passingthrough theport 56, and all the gases flowing over the wall 41, down between the tubes 38,

around the lower edge of barrier 154, up between the tubes 37, and out of Hue 152.

Again, fuel may be burned on both grates at the same time, and, in such case, the products of combusti-on may be discharged through either Hue 52 or 152 alone, or through both of such lues, both being partially open, in the latter instance, and the dampers 57 and 157 `arranged correspondingly.

Further, either gratemay be used singly for the burning of fuel with the delivery of the gaseous products of combustion to its adjacent Hue 52 or 152, as the case may be, and with the corresponding port- 56 or 156 open.

Of course, in that case, the boiler is being operated at only partial capacity, but even then comparatively economically.

F rom the foregoing, it will be clear that this particular embodiment of the invention provides a double-grate, double combustionchamber boiler with water-tubes and walls or barriers so arranged and disposed as to permit the structure to be operated in any one of several ways, and, at the same time, preserve its capacity for eliicient functioning,

regardless of the'particular manner in which Y* during shipment or installation ofthe boilerV or heater, and, bymakingsuchwall and deiectors hollow and ,connecting their interiors in the manner illustrated and described, their contents become heated and the circulation of the water in the boiler is augmented in a mannerto increase the operating efliciency of the apparatus.

Furthermore, since suchtransverse walls are n arranged vertically, they f are self-cleaning, in that any soot or lthelike tending'to settle or become deposited thereonl automati-V cally falls oii down on to the grate or grates where it is burned.V i

' This invention is not limited or restricted `l to the exact `details of structure shown and described, and many mechanical changes may be incorporated init Without departure .from the invention, as defined vby the appended claims, and without the loss of any of its niaterial benefits, or advantages..

the combustion of fuel, other 'means for burning other types of' fuel, such as powdered orv pulverized coal,

dividing said compartment into two cham-y bers, said wall terminating short of the top of said compartment, a grate in one of said chambersbelow said tubes, means below the tubes, in the other Vchamber to co-operate with fuel in a manner to facilitate its com! bustion. a discliardesue connectino'with'tlie i b upper portion of onev of said chambers,l a barrier depending from thetop of that chamber equipped with said discharge-Hue, said barrier: extending down ybetween the watertubes in such chamber, said barrier having an openingr therethrough, and al damper for said opening.

` andtop walls, inner side and top walls spaced from the corresponding outer walls topic` vide a water-reservoir, end-walls for the boiler, Watentubes extended across theY coinpartment defined by said inner walls and con` necting together the water-legs between saidy side-walls, a transverse wall connecting 'to-y gether said inner side-walls and extended up` wardly fromt'ne bottom of said coinpartine t between and to about `tlietop oi `said watertubes and dividing said compartmenty into two chambers, said wall terminating short of the For example, instead of using agrate for:

top loisaidl compartment, a grate in oneof saidchambers below said tubes, means below the tubes inthe other chamber to co-operate with fuel in a manner to facilitate its combus- Hue, said barrier extending down between the tubes in suchcliamber and connecting at its ends with saidwater-reservoir, said barrier having an opening therethrough, andfa damper for said opening.`

3. In a boiler, the combination of outer side and top walls, inner side and top ywalls spaced from* the corresponding out-er walls to pro-y vide a water-reservoir, including water-legs between; said side-walls, end-walls for vrthe 'boiler,jwatertubes. extended across the yconiy partment defined bysaid inner walls and connecting said side water-legs together, a hollow transverse water-wall connecting said side water-legs together and extended upwardly from the bottoinoi" said compartment'` to about --tlie top oi said: tubes and dividing said compartment into 1 two chambers,y said f wall terminating short of the-top of said coinpartment,- afgratey in one of said chambers below said tubes, means below the tubes inl theother chamber to co-operate `with fuel infra; manner to facilitate itscoinbustion, a

dischargefiiue connecting with tlieupper por-y tion-oi one of vsaid chambers, Va hollow waterbarrier dependingfrom the top of said chamber equippedV ,with said Ldischarge-Hue, said barrier extending' down betweenx'tlie watertubes in such chamber, and connecting at its ends withl said water-reservoir, said barrier having ,a port therethrougliabove said watertubes, anda damperffor said port;` 'i

from tlierorresponding' outer `walls tor proy "4. In aboil-er, thecombination of outer side and top walls, inner sideand topwalls spaced vide a water-reservoirbetween them,end

walls for the boiler, water-tubes extended j acrosstlie compartment-defined by said inner walls andA connecting' together `the waterlegs between said side-walls, a transverse wall connecting `said, inner side-walls together and extended upwardly from the bottoni'y of said compartment between. and to about the ytop Y e n s ofsaid waterftubes and dividing said com` 2. In a boiler,y the combination of outer side partment into two chambers, said wall terminating short-of the top ofsaid compartment,

ar grate in oiieoi Ysaid chambersl below saidw tubes. means below said tubes in the other chamber to co-operatewitli fuel therein inra kmanner to` facilitate its combustion, a discharge-flue for and connecting with the upper portion ci each of ksaid chambers, dampersy yior said iiues, a baiiie depending from the top of one of said chambers and extending down said baille port;

2l- Y Y Y 1,851,7(17

5. In a boiler, the combinationof outer side and top walls, inner side and top .walls Y spaced `from the corresponding outer walls l to provide a weter-reervoir between them, end-walls tor the boiler, water-tubes extended across the compaftinent defined by said inner walls and connectingv together the water-legs between said idewallg a transverse wall 4 connecting' said inner side-walls together and ff() extended upwardly from the bottom of said con'lpartinent between and to about the top of said water-tubes and dividing` said compart-` ment into two chambers, said wall terminatk ing short of' the top of said compartment, a f5 grate in one of said chambers below said tubes, means below the tubes inthe other chamber to co-operate with fuel therein in a manner to Jeciiitate its combustion, a discharge-Hue for land connecting with the upper portion ef each of saidV chambers,

dampers for said fines, a bailein each of said chambers depending .trom the tops of the respective chambers and extending down between the tubes in such chambers, said baiies 2'5 having ports therethrough, and dampers in said baffle ports. l

6. In a boiler, the combination of outer side and top walls, inner side and top walls spaced from the correspon ding outer walls to 3c provide a water-reservoir between them, endwalis Yfor the boiler, water-tubes extended across the compartment `defined by said inner walls and connecting,` togetherithe water-legs between said side-walls, Y a transverse wall connecting` said inner side-walls together and Y extended upwardly from the bottom of said compartment between and to about the top of' said water-tubes end dividing said co1npertinent into two Chambers, said wall termi- "40 natinp` short oi3 the 'top of said compartment,

a grate in one et said chambers below said tubes, means below. thetubes inthe other chamber to co-opera-te with fuel therein in a manner to facilitate its combustion, a discha ige-Hue tor and connecting with the upper portion of each of said chambers, dampers for seid iues, battle in each of said chambers depending from .the tops of the respective chambers and extending down between the tubes in such chambers, said baffles having ports therethrough, dampers in'said ports, and means connecting each otl said dischargeflue dainpers with the bathe-port damper of l the remote chamber, whereby each such pair "0 of dainpers wiii open and close together.

In witness whereof I have hereunto set my band.

ADOLIH T. JOHANSON. 

